aeromotive a1000 has 8AN in the larger version.
sure they flow different. Just get one for the HP your expecting and you'll be fine.
I'm running the large magnafuel reg... has all 8AN's 2 inputs and 1 return. I used to have the monster aeromotive - had -10's i think... that one was good for like 2000HP as they claim - too big for me though.
Phil